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Gentoo: GLSA-201207-06 Normal: JRuby Denial of Service Condition

gentoo
Calendar Grey July 9, 2012
Scroller Gentoo
Security flaw discovered in JRuby. Users of Gentoo Linux advised to update to reduce potential threats.
A hash collision vulnerability in JRuby allows remote attackers to cause a Denial of Service condition.

Summary

JRuby does not properly randomize hash functions to protect against hash collision attacks.

Topics%20covered

Topics Covered

security advisory Gentoo software update Denial of Service normal severity hash collision JRuby

Resolution

All JRuby users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-java/jruby-1.6.5.1"

References

[ 1 ] CVE-2011-4838 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4838

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201207-06
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: JRuby: Denial of Service
Date: July 09, 2012
Bugs: #396305
ID: 201207-06

Topics%20covered

Topics Covered

security advisory Gentoo software update Denial of Service normal severity hash collision JRuby

Synopsis

A hash collision vulnerability in JRuby allows remote attackers to cause a Denial of Service condition.

Background

JRuby is a Java-based Ruby interpreter implementation.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-java/jruby < 1.6.5.1 >= 1.6.5.1

Impact

===== A remote attacker could send a specially crafted input, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.